公开(公告)号：ES2103983T3

公开(公告)日：1997-10-01

申请号：ES93100178

申请日：1993-01-08

Applicant: BASF AG

Inventor： PIPPER GUNTER ,  GOETZ WALTER DR ,  CORDES CLAUS DR ,  FLOSS JOSEF GEORG DR ,  MATTERN GUENTER ,  HILDENBRAND PETER DR

IPC: C08J3/20 ,  C08J5/04

Abstract: A process for the preparation of filler-containing thermoplastic moulding compositions by mixing fillers with thermoplastics in the melt, where a) the fillers are mixed in a mixing device in the melt with a low-molecular-weight thermoplastic having a maximum melt viscosity of 30 Pas (measured at a temperature of 20 DEG C above the melting point of the thermoplastic and at a shear gradient of 1 000 s ), b) the resultant product is discharged from the mixing device, cooled and comminuted, and c) the comminuted product in the solid phase is subsequently subjected to post-condensation.

公开(公告)号：DE3460459D1

公开(公告)日：1986-09-18

申请号：DE3460459

申请日：1984-03-21

Applicant: BASF AG

Inventor： PIPPER GUNTER ,  RIEGGER SIEGFRIED DR ,  FLOSS JOSEF GEORG DR

IPC: C08G69/00 ,  B29C45/17 ,  B29C47/00 ,  B29C48/76 ,  C08F6/00 ,  C08G85/00

公开(公告)号：DE59306949D1

公开(公告)日：1997-08-28

申请号：DE59306949

申请日：1993-01-08

Applicant: BASF AG

Inventor： PIPPER GUNTER ,  GOETZ WALTER DR ,  CORDES CLAUS DR ,  FLOSS JOSEF GEORG DR ,  MATTERN GUENTER ,  HILDENBRAND PETER DR ,  HURLEY JAMES DR ,  SCHLICHTING KARL DR ,  MCKEE GRAHAM EDMUND DR ,  BLINNE GERD DR

IPC: C08J3/20 ,  C08J5/04

Abstract: A process for the preparation of filler-containing thermoplastic moulding compositions by mixing fillers with thermoplastics in the melt, where a) the fillers are mixed in a mixing device in the melt with a low-molecular-weight thermoplastic having a maximum melt viscosity of 30 Pas (measured at a temperature of 20 DEG C above the melting point of the thermoplastic and at a shear gradient of 1 000 s ), b) the resultant product is discharged from the mixing device, cooled and comminuted, and c) the comminuted product in the solid phase is subsequently subjected to post-condensation.

公开(公告)号：DE3468224D1

公开(公告)日：1988-02-04

申请号：DE3468224

申请日：1984-06-13

Applicant: BASF AG

Inventor： SCHMIDT FRANZ DR ,  PIPPER GUNTER ,  FLOSS JOSEF GEORG DR ,  ZAHRADNIK FRANZ DR

IPC: C08G69/26 ,  C08G69/00 ,  C08G69/28 ,  C08L77/00

Abstract: Nylons are prepared by a continuous process in which, in an evaporator zone, an aqueous solution of a salt of a dicarboxylic acid of 6 to 18 carbon atoms and a diamine of 6 to 18 carbon atoms is heated to 250 DEG -300 DEG C. under superatmospheric pressure, with simultaneous vaporization of water and formation of a prepolymer, the prepolymer and the vapors are separated continuously, the vapors are rectified and the entrained diamines are recycled, and the prepolymer is fed to a polycondensation zone and subjected to polycondensation under superatmospheric pressure of from 1 to 10 bar and at from 250 DEG to 300 DEG C., wherein the aqueous salt solution is heated under superatmospheric pressure of from 1 to 10 bar during a residence time of less than 60 seconds, with the proviso that, on leaving the evaporator zone, the degree of conversion is not less than 93% and the water content of the prepolymer is not more than 7% by weight.

公开(公告)号：DE3321581A1

公开(公告)日：1984-12-20

申请号：DE3321581

申请日：1983-06-15

Applicant: BASF AG

Inventor： SCHMIDT FRANZ DR ,  PIPPER GUNTER ,  FLOSS JOSEF GEORG DR ,  ZAHRADNIK FRANZ DR

IPC: C08G69/26 ,  C08G69/00 ,  C08G69/28 ,  C08L77/00

Abstract: Nylons are prepared by a continuous process in which, in an evaporator zone, an aqueous solution of a salt of a dicarboxylic acid of 6 to 18 carbon atoms and a diamine of 6 to 18 carbon atoms is heated to 250 DEG -300 DEG C. under superatmospheric pressure, with simultaneous vaporization of water and formation of a prepolymer, the prepolymer and the vapors are separated continuously, the vapors are rectified and the entrained diamines are recycled, and the prepolymer is fed to a polycondensation zone and subjected to polycondensation under superatmospheric pressure of from 1 to 10 bar and at from 250 DEG to 300 DEG C., wherein the aqueous salt solution is heated under superatmospheric pressure of from 1 to 10 bar during a residence time of less than 60 seconds, with the proviso that, on leaving the evaporator zone, the degree of conversion is not less than 93% and the water content of the prepolymer is not more than 7% by weight.